如何实际解析接收到的json数据 [英] How to parse received json data in action

问题描述

我正在将JSP中的json数组数据发送到Action类，因为其中包含了struts2-json-plugin. 我想解析它以作为ArrayList元素接收它. 我的代码是

I am sending json array data from JSP to Action class for that I have included struts2-json-plugin. I want to parse it to receive it as a ArrayList elements. my code is

在JSP中:

$.ajax({
        url: "UpdateNotification",
        dataType: "json",
        data: {ids: JSON.stringify(ids)},
        success: function(data) {
            alert("success " + data.st);
        }
    })

实际情况:

public class Test extends ActionSupport {
    ArrayList<String> ids = new ArrayList<String>();

        public ArrayList<String> getIds() {
            return ids;
        }

        public void setIds(ArrayList<String> ids) {
            this.ids = ids;
        }

        public String updateNotification() {
                 System.out.println("ID ARE " + getIds());
                    for (String a : getIds()) {
                        System.out.println("data " + a);
                    }
             }
      }

运行时它正在显示数据

ID ARE [["25","27","28"]]
  data ["25","27","28"]

我如何才能将一个数据作为一个数组元素进行操作.

How can I get one data as one array element in action.

编辑我正在尝试获取数据

EDIT I am trying to get data as

ids(0)=25;
ids(1)=27;
ids(2)=28;

推荐答案

Json stringify方法返回json格式的值数组，例如["25","27","28"].但是要转换为列表，您需要删除[或]字符以提交CSV值.因为只能将CSV值转换为列表.试试

Json stringify method returns an array of values in json format something like ["25","27","28"]. But to convert to a list you need to remove [ or ] characters to submit CSV values. Because only CSV values could be converted to a list. Try

data: {ids: JSON.stringify(ids).replace(/[\[\]]/g,'')},

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